Epic: Discontinue, migrate or document legacy hosts

[hellais]

We did a inventory of all of our current infrastructure to plan this area of work.

Highest priority is discontinuing things on eclipsis so that we are able to fall within the new 50 credits/month tier.

Greenhost (ghs)

• ams-wcth2.ooni.nu (37.218.245.117) -> machine killed
• ams-wcth3.ooni.nu (37.218.247.47) -> machine killed
• api-test-geoip (37.218.244.46) 54.10 -> machine killed
• greenhost-beacon.ooni.org (37.218.243.110) 7.40 -> machine killed
• explorer-redirector.ooni.nu (37.218.242.29) 24.50 -> machine killed
• migration of other services tracked in: Migrate/Discontinue greenhost machines #121

Hetzner (htz)

• monitoring.ooni.org 38 -> playbook migration complete. Should eventually migrate jupyter over to notebook.ooni.org. TODO figure out how to monitor nodes in AWS.
• backend-fsn.ooni.org 116 -> Should be moved to EC2
• backend-hel.ooni.org 130 -> Is stopped and should be terminated
• data1.htz-fsn.prod.ooni.nu 122 -> New clickhouse cluster node. Hot primary replicated host. Setup complete.
• data2.htz-fsn.prod.ooni.nu 129 -> New clickhouse cluster node. Hot secondary replicated host. Keep, but needs to be re-initialized not doing this for now
• notebook.ooni.org 36 -> New jupyter notebook server. Setup complete.
• data3.htz-fsn.prod.ooni.nu -> New clickhouse cluster. Cold backup replicated store with slow drives. Setup complete.

AWS

• Consolidate microservices into bigger ones
• Work to be done related to moving terraform provisioning over from ansible configs #337
• Move secrets manager to parameter store
• Look into task memory allocations and consider dropping them
• Monitoring of ECS cluster and EC2 nodes

Digital Ocean

• wcth-prod[0-2]
• wcth-dev
• countly -> running a very out of date version (deprecated)